CN204376282U - A kind of 500kV Transformer Substation Lightning Protection earthing device combining structure - Google Patents

A kind of 500kV Transformer Substation Lightning Protection earthing device combining structure Download PDF

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Publication number
CN204376282U
CN204376282U CN201420798329.2U CN201420798329U CN204376282U CN 204376282 U CN204376282 U CN 204376282U CN 201420798329 U CN201420798329 U CN 201420798329U CN 204376282 U CN204376282 U CN 204376282U
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CN
China
Prior art keywords
hot dip
dip galvanizing
soil
galvanizing pipe
flow sensor
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Fee Related
Application number
CN201420798329.2U
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Chinese (zh)
Inventor
石海波
何子东
宁金峰
张智
封国庚
孟繁华
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
State Grid Corp of China SGCC
Economic and Technological Research Institute of State Grid Hebei Electric Power Co Ltd
Original Assignee
State Grid Corp of China SGCC
Economic and Technological Research Institute of State Grid Hebei Electric Power Co Ltd
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Filing date
Publication date
Application filed by State Grid Corp of China SGCC, Economic and Technological Research Institute of State Grid Hebei Electric Power Co Ltd filed Critical State Grid Corp of China SGCC
Priority to CN201420798329.2U priority Critical patent/CN204376282U/en
Application granted granted Critical
Publication of CN204376282U publication Critical patent/CN204376282U/en
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

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Abstract

The utility model discloses a kind of 500kV Transformer Substation Lightning Protection earthing device combining structure.It comprises hot dip galvanizing pipe, radio flow sensor and conducting medium; Described hot dip galvanizing pipe upper end is connected with lightning arrester, and lower end is placed in the hole, brill ground of soil; The part stretching into the hole, brill ground of soil at hot dip galvanizing pipe installs connection radio flow sensor; Arrange in space between hot dip galvanizing pipe and soil and be filled with conducting medium.The utility model filled conductive medium between hot dip galvanizing pipe and soil can reduce earth resistance, and simultaneously in order to security consideration, earthing device contains radio flow sensor, Real-Time Monitoring dissufion current, and for the assessment of electromagnetic interference provides foundation, cost is lower.

Description

A kind of 500kV Transformer Substation Lightning Protection earthing device combining structure
Technical field
The utility model relates to Transformer Substation Lightning Protection earthing device, especially a kind of 500kV Transformer Substation Lightning Protection earthing device combining structure containing radio flow measurement.
Background technology
Thunder and lightning is one of key factor always endangering power system security reliability service.Along with the development of science and technology, the raising of lightning arrester manufacture level and promoting the use of of metal oxide arrester, make the protection of the lightning overvoltage of transforming plant primary high-pressure section be guaranteed.But then; along with the raising of Automation of Electric Systems degree; be that the equipment such as control, protection, signal, communication, monitoring of main element is widely used with microelectronics, in some large-scale transmission transformer stations, even if also generally adopt in sampling and metering system.Because the device unit of conventional electromagnetic protection mostly is unary resistance, inductance and electric capacity etc.; resistance to thermal capacity is large; also stronger to the tolerance of spike; so the Lightning Transient that can bear high energy impacts; and a few volt is only had for working voltage; signal code only has these electronic equipments of microampere order, and that just not necessarily stands lives.Electrical and Electronic technology is the basis of modern material progress; although its fast development facilitates the development of productivity; accelerate social prosperity and progressive process, but also bring troublesome problem simultaneously: on the one hand, the extensive use of Electrical and Electronic equipment causes serious environment electromagnetic noise interference; On the other hand, electronic technology forward high-frequency, high speed, microminiaturization, networking and intelligent direction development, the interference of electromagnetic interference, particularly thunder and lightning is more and more outstanding on the impact of these equipment and system, increases year by year the incidence of the damage accident that these equipment cause.After electronic information is impaired, except direct losses, indirect loss is often difficult to estimate.
Along with the fast development of electric utility, the quantity of transformer station also increases severely thereupon fast, and the major issue that the fail safe of transformer station is people to be paid close attention to.In the major measure that transformer station's installing lightning rod is protection direct lightning strike, thunder and lightning is attracted on one's body by lightning rod, and safety imports underground, thus protection electric equipment and building exempt from thunderbolt.A unified ground network also will be laid after installing lightning rod by general transformer station according to the requirement of safety and working earthing, but current ground network exists and reduces earth resistance DeGrain and the high problem of cost.
5OOkV transformer station, compared with substation, has a lot of feature, with regard to electrical secondary system, has:
(1) high to the reliability requirement of control system.The capacity of 5OOkV transformer station is large, voltage is high, transmission line circuit number is many, is all generally the pivotability transformer station of electric power conveying, so the status of 5OOkV transformer station in electric power system is very important in electric power system.Due to any error of the aspects such as control, protection, cause fault or the accident of transformer station, not only affect the safe operation of transformer station self, and also very large on the impact of electric power system, often cause very serious consequence.Therefore, require that the control system of 5OOkV transformer station should have the reliability of height.
(2) controlled object is many.Except circuit breakers a large amount of in high voltage distribution installation and isolating switch need control, also have on-load voltage regulating switch, the reactive power compensation device of transformer, transformer station needs the number of objects controlled to be far longer than 330kV and 220kV transformer station.
(3) distance of control object.Because control object is far away, control cables is long, increases the voltage drop in control cables.In addition, because electric current, Secondary Circuit of Potential Transformer cable are long, cause secondary burden to strengthen, affect the accuracy of meter meter and the survey of protective relaying device measurement links, even likely cause the irregular working of these devices.
(4) control cables consumption is large.Due in 5OOkV transformer station, controlled object is many, and command range is far away, and the wiring also more complicated of control, signal, relaying protection, causes increasing considerably of cable consumption.
(5) automatization level requires high.
Utility model content
Of the present utility model goal of the inventionearth resistance DeGrain and the high problem of cost is reduced in order to overcome existing grounding-for-lightning device with regard to being, there is provided that a kind of structure is simple, cost is lower, reduce the effective and lightning protection earthing device for transformer station combining structure that is that easily implement of earth resistance, simultaneously in order to security consideration, earthing device contains radio flow sensor, Real-Time Monitoring dissufion current, for the assessment of electromagnetic interference provides foundation.
The utility model solves that its technical problem adopts technical schemebe:
A kind of 500kV Transformer Substation Lightning Protection earthing device combining structure, comprises hot dip galvanizing pipe, radio flow sensor and conducting medium; Described hot dip galvanizing pipe upper end is connected with lightning arrester, and lower end is placed in the hole, brill ground of soil; The part stretching into the hole, brill ground of soil at hot dip galvanizing pipe installs connection radio flow sensor; Arrange in space between hot dip galvanizing pipe and soil and be filled with conducting medium.
Described conducting medium is electroconductive cement.
The wireless telecommunications of described radio flow sensor adopt ZigBee technology.
The beneficial effects of the utility model are, between hot dip galvanizing pipe and soil, filled conductive medium can reduce earth resistance, simultaneously in order to security consideration, earthing device contains radio flow sensor, Real-Time Monitoring dissufion current, for the assessment of electromagnetic interference provides foundation, cost is lower.
Accompanying drawing explanation
Fig. 1 is the schematic diagram of the 500kV Transformer Substation Lightning Protection earthing device combining structure containing radio flow measurement.
Embodiment
As shown in Figure 1, the utility model embodiment comprises hot dip galvanizing pipe 2, radio flow sensor 3 and conducting medium 4 containing the 500kV Transformer Substation Lightning Protection earthing device combining structure of radio flow measurement, hot dip galvanizing pipe 2 upper end is connected to earth bus 5 through lightning arrester 1, lower end is placed in the hole, brill ground of soil, and filled conductive medium 4 in space between hot dip galvanizing pipe 2 and soil; Described radio flow sensor 3 installation is connected to hot dip galvanizing pipe 2 and stretches in the part in hole, brill ground of soil.Described conducting medium 4 the best is electroconductive cement.The wireless telecommunications of described radio flow sensor 3 adopt ZigBee technology.
Radio flow sensor 3 is by the mode of the signal of measurement by wireless transmission, through industrial computer 9 and terminal 10, data/address bus 7 is aggregated into through corresponding procotol 8, finally send to server 6, server 6 is analyzed the real-time current value measured, to reflect the safe condition of grounding-for-lightning device.

Claims (1)

1. a 500kV Transformer Substation Lightning Protection earthing device combining structure, is characterized in that: this combining structure comprises hot dip galvanizing pipe, radio flow sensor and conducting medium; Described hot dip galvanizing pipe upper end is connected with lightning arrester, and lower end is placed in the hole, brill ground of soil; The part stretching into the hole, brill ground of soil at hot dip galvanizing pipe installs connection radio flow sensor; Arrange in space between hot dip galvanizing pipe and soil and be filled with conducting medium.
CN201420798329.2U 2014-12-17 2014-12-17 A kind of 500kV Transformer Substation Lightning Protection earthing device combining structure Expired - Fee Related CN204376282U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201420798329.2U CN204376282U (en) 2014-12-17 2014-12-17 A kind of 500kV Transformer Substation Lightning Protection earthing device combining structure

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201420798329.2U CN204376282U (en) 2014-12-17 2014-12-17 A kind of 500kV Transformer Substation Lightning Protection earthing device combining structure

Publications (1)

Publication Number Publication Date
CN204376282U true CN204376282U (en) 2015-06-03

Family

ID=53332464

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201420798329.2U Expired - Fee Related CN204376282U (en) 2014-12-17 2014-12-17 A kind of 500kV Transformer Substation Lightning Protection earthing device combining structure

Country Status (1)

Country Link
CN (1) CN204376282U (en)

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C14 Grant of patent or utility model
GR01 Patent grant
CF01 Termination of patent right due to non-payment of annual fee

Granted publication date: 20150603

Termination date: 20161217

CF01 Termination of patent right due to non-payment of annual fee